Astronauts cannot burp in space.
232
A neutron star (what remains after a Super Nova) is so dense that a portion of it the size of a sugar cube would weigh as much as all of humanity, or more than all the cars in the United States.
5
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
The earth rotates more slowly on its axis in March than in September.
145
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
Some asteroids have other asteroids orbiting them.
131
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15